Fuel-feeding device



No. 749,206. PATENTED JAN. 12, 1904,-

G; W. LIMBERT.

FUEL FEEDING DEVICE.

APPLICATION FILED APR. 20, 1903. no 1101331.. 2 snnm'ksnnn'r 1.

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PATENTBD JAN. 12,1904.

G. W. LIMBBIiT.

FUEL FEEDING DEVICE. nrmoumn EILBID .APB.,20. 1903.

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UNITED {STATES Patented January 12, 1904.

PATENT OFFICE.

FUEL-FEEDING DEVICE.

SPECIFICATION forming part of Letters Patent No. 749,206, dated January12, 1904.

Application filed April 20, 1903. T Serial No. 153,523. (No model.) D

To all whom it puny concern: I

Be it known that I, GEORGE WASHINGTON LIMBERT, a citizen of the UnitedStates, residing at Saspamco, in the county of Wilson and State ofTexas, have invented a new and useful Fuel-Feeding Device, of which thefollowing is a specification. I

My invention is an improvement in means for feeding pulverized fuel to akiln, furnace, or to any combustion-chamber adapted to burn such fuel. r

The object of my invention is to provide a device by which such fuelwill be fed to the fire-box by means of air-blasts without requiringmechanical appliances to aid the passage of the fuel from a suitablehopper to the place of combustion.

Briefly, my invention comprises a .hopper adapted to receive the fuel tobe burned, pipes to convey the fuel to the fire-box, and means forinjecting air into said pipes, and in the novelties of combination andarrangement hereinafter described, particularly pointed out in theclaims, and shown in the accompanying drawings, in which- Figure 1 is aperspective view. Fig. 2 is a vertical section through the fuel-pipes,the air-pipes being in elevation. Fig. 3 is a section about on the line3 3 of Fig. 2.

In the drawings, A represents a hopper having a central downwardly opendischargespout A, having at its lower end an outwardlyturned flange ABelow this is a straight vertical fuel-pipe B, having at its upper endan outwardly-extending flange B, which is bolted or riveted to theflange A The lower end of the pipe is threaded, as at B and closed by athreaded cap B Adjacent the bottom of the pipe is an opening B, threadedon the edges, into which is threaded one end of the pipe C. Arranged inthe pipe B and opposite to the opening B is an inclined bottom orpartition B its lower end being immediately below the opening B.

Leading from the pipe B to the place of combustion are the pipes C C,these two pipes being separated and connected by the short intermediatesection C". This section has a casing C formed on its upper side, andworking in this casing and sliding vertically and transversely to thepipe-section is a valve or damper C, the stem projecting upward andbeing operated by a hand-wheel C The valve maybe arrangedso as toentirely or partially close-the pipe, thereby regulating the amount offuel passing through the pipe. An air-pipe D leads from a fan or blowerof any kind, (not shown,) and a connecting-pipe D, having a globe-valveD operated by the usual handwheel D ,-leads into the lower part of thepipe B in the plane of the pipe C, its forward tapering end D extendingthrough the partition B in alinement with the pipe C. A short verticalpipe D leads upward from the pipe D through the partition B openingupwardly above same. A supplemental pipe E, having the globe-E andhand-wheel E runs from the pipe D and is bent downward, its lowerthreaded end terminating above and adjacent the pipe C. This pipe has anopening surrounded by a flange C, and fitting within same is a curvedtapering nozzle E, its upper end being threaded and resting against thelower end of the pipe E. A threaded collar E connects the pipe E andnozzle E.

The operation of the device heretofore described is as follows: Thepulverized fuel feeds from the hopper into the pipe B, the inclinedpartition B directing same to the pipe 0, into and through which it isforced by the air-blast from the nozzle D. An upward current of air isalso directed into the pulverized fuel from the pipe D preventing samefrom caking and clogging up the pipe B above the nozzle D. By openingthe valve E a supplemental draft is established through the pipe E andnozzle E, this current entering the pipe C to the rear of the damper,and is therefore not checked by a partial or entire closing of thedamper, but will clear the pipe C after the damper has been closed, andadmittance of addition fuel prevented. Where the pipe C is ofconsiderable length, additional draft may be used to advantage, and apipe F is connected to the lower ,end of the pipe D.

The pipe has the valve F and hand-wheel F and communicates through anupwardly-inthe combustion-chamber and the nozzle E of .clined extensionF with the pipe C between ical stirrers or stokers are used in mydevice, and there are no movable parts to wear out by use or requiremachinery to drive.

It will of course be understood that while the term air is used todesignate the fluid by which the fuel is forced into thecombustion-chamber steam may be ejected from the nozzles D and E andwill serve the same purpose as an air-blast, it being obvious that thefluid most suitable and convenient would be used and that this would bedetermined by the conditions under which the apparatus was being used.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination with a hopper, of a vertically-arranged pipe beneathand having communication with the hopper, a pipe leading horizontallyfrom the lower portion of the vertical pipe, an inclined partition inthe vertical pipe adapted to direct fuel toward the horizontal pipe andan air-pipe havinga nozzle extending through the inclined partition intothe vertical pipe in alinement with the horizontal pipe.

2. The combination witha vertical pipe, of a hopper arranged above anddischarging into said vertical pipe, a horizontal pipe leading from andopening into the vertical pipe, an in-' clined partition arranged in thevertical pipe opposite the horizontal pipe, an air-pipe having atapering nozzle passing through said partition and opening above same inalinement with the horizontal pipe, and a vertical, upwardly open,branch of said air-pipe extending upwardly through the partition.

3. The combination with a vertical pipe, of a hopper arranged above anddischarging into said vertical pipe, a horizontal pipe leadingtherefrom, an inclined partition arranged in the vertical pipe its loweredge resting below and adjacent the horizontal pipe, an air-pipedischarging into said vertical pipe by a nozzle in alinement with thehorizontal pipe and by a branch at right angles to the horizontal pipe,and a sliding damper working in said horizontal pipe.

4:. The combination with a hopper, of a vertical pipe opening upwardlyinto the lower portion of said hopper, an inclined partition arranged inthe lower portion of the vertical pipe, a horizontal pipe leading fromsaid vertical pipe at a point opposite the partition, a damper in saidhorizontal pipe, an air-pipe discharging into the vertical pipe in theplane of the horizontal pipe, and a supplemental pipe adapted todischarge air into the horizontal pipe on the opposite side of thedamper from the vertical pipe.

GEORGE WASHINGTON LIMBERT.

Witnesses:

WM. M. FORD, J. C. HOPWOOD.

